/* Euclide's site, in the app's « Atelier » look: ink on paper, hairlines,
   IBM Plex, the logo's blue. Light and dark follow the system. */

@font-face {
  font-family: "Plex";
  src: url("/assets/fonts/plex-sans-400.woff2") format("woff2");
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: "Plex";
  src: url("/assets/fonts/plex-sans-500.woff2") format("woff2");
  font-weight: 500;
  font-display: swap;
}
@font-face {
  font-family: "Plex";
  src: url("/assets/fonts/plex-sans-600.woff2") format("woff2");
  font-weight: 600;
  font-display: swap;
}
@font-face {
  font-family: "Plex Mono";
  src: url("/assets/fonts/plex-mono-400.woff2") format("woff2");
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: "Plex Mono";
  src: url("/assets/fonts/plex-mono-500.woff2") format("woff2");
  font-weight: 500;
  font-display: swap;
}

:root {
  color-scheme: light dark;
  --canvas: #faf9f8;
  --chrome: #f3f1ee;
  --panel: #ffffff;
  --panel-alt: #f7f6f5;
  --ink: #111213;
  --muted: #4e5257;
  --faint: #6a6e72;
  --line: rgb(16 12 8 / 0.13);
  --line-strong: rgb(16 12 8 / 0.28);
  --accent: #0f4fa8;
  --accent-soft: #eaf0fb;
  --on-accent: #ffffff;
  --ok: #116b2e;
  --danger: #a4262c;
  --shadow: 0 1px 2px rgb(16 12 8 / 0.05), 0 12px 32px -16px rgb(16 12 8 / 0.28);
  --radius: 8px;
  --sans: "Plex", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --canvas: #131313;
    --chrome: #0e0e0e;
    --panel: #191919;
    --panel-alt: #202020;
    --ink: #eceae6;
    --muted: #b6b2ab;
    --faint: #8e8a84;
    --line: rgb(255 250 240 / 0.14);
    --line-strong: rgb(255 250 240 / 0.3);
    --accent: #8ab4f8;
    --accent-soft: #1e293b;
    --on-accent: #0b1220;
    --ok: #8fce78;
    --danger: #f58a96;
    --shadow: inset 0 1px 0 rgb(255 250 240 / 0.06), 0 12px 32px -12px rgb(0 0 0 / 0.7);
  }
}

* {
  box-sizing: border-box;
}
html {
  -webkit-text-size-adjust: 100%;
}
body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font: 400 1rem/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}
h1,
h2,
h3 {
  margin: 0;
  font-weight: 600;
  text-wrap: balance;
}
p {
  margin: 0;
}
.mono {
  font-family: var(--mono);
  font-size: 0.8125rem;
  color: var(--faint);
}
.muted {
  color: var(--muted);
  font-size: 0.875rem;
}
.wrap {
  width: min(1120px, 100% - 2.5rem);
  margin-inline: auto;
}

/* Header and footer */
.top {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--canvas) 86%, transparent);
  backdrop-filter: blur(14px) saturate(160%);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  border-bottom: 1px solid var(--line);
}
.top-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  height: 3.5rem;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  color: var(--ink);
  text-decoration: none;
  font: 600 0.8125rem/1 var(--mono);
  letter-spacing: 0.18em;
}
.brand em {
  font-style: normal;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--faint);
}
.top nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}
.top nav a,
.link {
  padding: 0.375rem 0.75rem;
  border-radius: 6px;
  color: var(--muted);
  text-decoration: none;
  font: 500 0.875rem/1.2 var(--sans);
  background: none;
  border: 0;
  cursor: pointer;
}
.top nav a:hover,
.link:hover {
  color: var(--ink);
  background: rgb(127 127 127 / 0.1);
}
.top nav a[aria-current="page"] {
  color: var(--ink);
}
.foot {
  margin-top: 6rem;
  border-top: 1px solid var(--line);
  color: var(--faint);
  font-size: 0.875rem;
}
.foot-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem;
  padding-block: 2rem;
}
.foot a {
  color: var(--muted);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  height: 2.75rem;
  padding: 0 1.25rem;
  border-radius: 8px;
  border: 1px solid transparent;
  font: 500 0.9375rem/1 var(--sans);
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition:
    background-color 120ms,
    border-color 120ms,
    scale 120ms;
}
.btn:active {
  scale: 0.97;
  transition-duration: 60ms;
}
.btn-primary {
  background: var(--ink);
  color: var(--canvas);
}
.btn-primary:hover {
  background: color-mix(in srgb, var(--ink) 86%, var(--canvas));
}
.btn-ghost {
  background: var(--panel);
  color: var(--ink);
  border-color: var(--line-strong);
}
.btn-ghost:hover {
  background: var(--panel-alt);
}
.icon {
  flex: none;
}

/* Landing */
.eyebrow {
  font: 500 0.75rem/1 var(--mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}
.hero {
  padding: 5.5rem 0 3rem;
  text-align: center;
}
.hero h1 {
  margin-top: 1.25rem;
  font-size: clamp(2.5rem, 6vw, 4.25rem);
  line-height: 1.04;
  letter-spacing: -0.035em;
}
.lead {
  margin: 1.25rem auto 0;
  max-width: 40rem;
  color: var(--muted);
  font-size: clamp(1.0625rem, 1.6vw, 1.25rem);
  line-height: 1.55;
}
.cta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 2.25rem;
}
.cta-meta {
  margin-top: 0.875rem;
  font: 0.8125rem/1.4 var(--mono);
  color: var(--faint);
}
.hero-shot img {
  border-radius: 12px;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  aspect-ratio: 16 / 10;
  object-fit: cover;
  background: var(--panel-alt);
}
.section {
  margin-top: 7rem;
}
.section-title {
  font-size: clamp(1.625rem, 3vw, 2.25rem);
  letter-spacing: -0.025em;
  line-height: 1.15;
  max-width: 34rem;
}
.features {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-top: 2.5rem;
}
.feature img {
  border-radius: var(--radius);
  border: 1px solid var(--line);
  aspect-ratio: 16 / 10;
  object-fit: cover;
  background: var(--panel-alt);
}
.feature h3 {
  margin-top: 1.125rem;
  font-size: 1.125rem;
  letter-spacing: -0.01em;
}
.feature p {
  margin-top: 0.375rem;
  color: var(--muted);
  font-size: 0.9375rem;
}
.band {
  margin-top: 7rem;
  padding: 2.75rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
}
.band h2 {
  font-size: clamp(1.375rem, 2.4vw, 1.75rem);
  letter-spacing: -0.02em;
}
.points {
  list-style: none;
  margin: 2rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.75rem 2rem;
}
.points li {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line-strong);
}
.points strong {
  font-weight: 600;
}
.points span {
  color: var(--muted);
  font-size: 0.9375rem;
}
.news {
  display: grid;
  gap: 1.5rem;
}
.news h2 {
  margin-top: 0.75rem;
}
.ticks {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.625rem;
}
.ticks li {
  position: relative;
  padding-left: 1.5rem;
  color: var(--muted);
}
.ticks li::before {
  content: "";
  position: absolute;
  left: 0.25rem;
  top: 0.62em;
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 2px;
  background: var(--accent);
}
.ticks strong {
  color: var(--ink);
  font-weight: 600;
}
.more {
  font-weight: 500;
  text-decoration: none;
}
.closing {
  margin-top: 7rem;
  text-align: center;
}
.closing h2 {
  font-size: clamp(1.75rem, 3.4vw, 2.5rem);
  letter-spacing: -0.03em;
}

/* Inner pages */
.page-head {
  padding: 4.5rem 0 2.5rem;
}
.page-head h1 {
  font-size: clamp(2.25rem, 5vw, 3.25rem);
  letter-spacing: -0.035em;
  line-height: 1.08;
}
.page-head .lead {
  margin-left: 0;
}
.downloads {
  display: grid;
  gap: 1rem;
}
.dl {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1.5rem 1.75rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.dl-primary {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}
.dl h3 {
  font-size: 1.125rem;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem 0.75rem;
}
.dl p {
  margin-top: 0.375rem;
  color: var(--muted);
  max-width: 38rem;
}
.dl .mono {
  margin-top: 0.625rem;
}
.tag {
  font: 500 0.6875rem/1 var(--mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 0.3125rem 0.5rem;
  border-radius: 4px;
}
.notes {
  margin-top: 3rem;
}
.notes .ticks {
  margin-top: 1.25rem;
}
.table {
  width: 100%;
  margin-top: 1.25rem;
  border-collapse: collapse;
  font-size: 0.9375rem;
}
.table th,
.table td {
  text-align: left;
  padding: 0.625rem 0.75rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
.table th {
  font: 500 0.6875rem/1.2 var(--mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--faint);
}
.more-versions {
  margin-top: 1rem;
  font-weight: 500;
}
.num {
  text-align: right !important;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

/* Changelog */
.versions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
  margin-top: 1.75rem;
}
.versions a {
  font: 0.8125rem/1 var(--mono);
  padding: 0.4375rem 0.625rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel);
  color: var(--muted);
  text-decoration: none;
}
.versions a:hover {
  color: var(--ink);
  border-color: var(--line-strong);
}
.changelog {
  display: grid;
  gap: 1.5rem;
}
.release {
  display: grid;
  grid-template-columns: 11rem minmax(0, 1fr);
  gap: 2rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--line);
  scroll-margin-top: 4.5rem;
}
.release header h2 {
  font-size: 1.375rem;
  letter-spacing: -0.02em;
}
.release header .mono {
  margin-top: 0.375rem;
}
.prose {
  max-width: 44rem;
  color: var(--ink);
}
.prose > * + * {
  margin-top: 0.875rem;
}
.prose h3 {
  margin-top: 2rem;
  font: 600 0.6875rem/1 var(--mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--faint);
}
.prose h3:first-child {
  margin-top: 0;
}
.prose ul {
  margin: 0.875rem 0 0;
  padding-left: 1.25rem;
}
.prose li + li {
  margin-top: 0.4375rem;
}
.prose li::marker {
  color: var(--faint);
}
.prose strong {
  font-weight: 600;
}
.prose code {
  font: 0.875em var(--mono);
  background: var(--panel-alt);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 0.05em 0.3em;
}
.prose figure {
  margin: 1.5rem 0;
}
.prose img {
  border-radius: var(--radius);
  border: 1px solid var(--line);
  aspect-ratio: 16 / 10;
  object-fit: contain;
  background: var(--panel-alt);
}

/* Admin */
.login {
  width: min(22rem, 100% - 2.5rem);
  margin: 6rem auto 0;
}
.login h1 {
  font-size: 1.75rem;
  letter-spacing: -0.02em;
}
.login form {
  display: grid;
  gap: 0.75rem;
  margin-top: 1.75rem;
}
.login label {
  font: 500 0.6875rem/1 var(--mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--faint);
}
.login input {
  height: 2.75rem;
  padding: 0 0.875rem;
  font: inherit;
  color: var(--ink);
  background: var(--panel);
  border: 1px solid var(--line-strong);
  border-radius: 8px;
}
.login input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 22%, transparent);
}
.error {
  color: var(--danger);
  font-size: 0.875rem;
}
.admin-wrap {
  padding: 2.5rem 0 4rem;
  display: grid;
  gap: 1.25rem;
}
.admin-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
}
.admin-head h1 {
  font-size: 1.75rem;
  letter-spacing: -0.02em;
}
.admin-head .mono {
  margin-top: 0.375rem;
}
.seg {
  display: inline-flex;
  gap: 2px;
  padding: 3px;
  background: var(--panel-alt);
  border: 1px solid var(--line);
  border-radius: 8px;
}
.seg a {
  padding: 0.375rem 0.75rem;
  border-radius: 6px;
  font: 500 0.8125rem/1.2 var(--sans);
  color: var(--muted);
  text-decoration: none;
}
.seg a[aria-current="page"] {
  background: var(--panel);
  color: var(--ink);
  box-shadow: 0 1px 3px rgb(16 12 8 / 0.12);
}
.kpis {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
}
.kpi,
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.125rem 1.25rem;
}
.kpi-label {
  font: 500 0.6875rem/1.2 var(--mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--faint);
}
.kpi-value {
  margin-top: 0.625rem;
  font: 600 1.875rem/1 var(--mono);
  letter-spacing: -0.02em;
}
.kpi-sub {
  margin-top: 0.5rem;
  font-size: 0.8125rem;
  color: var(--muted);
}
.card h2 {
  font-size: 0.9375rem;
  margin-bottom: 1rem;
}
.grid-2,
.grid-3 {
  display: grid;
  gap: 1.25rem;
}
.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}
.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}
.chart {
  width: 100%;
  height: 160px;
  display: block;
}
.chart .bar,
.shares .bar {
  fill: var(--accent);
}
.chart .bar:hover {
  fill: var(--ink);
}
.chart .axis {
  stroke: var(--line-strong);
  stroke-width: 1;
}
.chart-axis {
  display: flex;
  justify-content: space-between;
  margin-top: 0.5rem;
  font: 0.75rem/1 var(--mono);
  color: var(--faint);
}
.shares {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}
.shares th {
  text-align: left;
  font-weight: 400;
  padding: 0.3125rem 0.75rem 0.3125rem 0;
  white-space: nowrap;
  max-width: 12rem;
  overflow: hidden;
  text-overflow: ellipsis;
}
.shares .share {
  width: 100%;
  padding: 0.3125rem 0;
}
.shares .share svg {
  display: block;
  width: 100%;
  height: 8px;
}
.shares .track {
  fill: var(--panel-alt);
}
.shares .num {
  padding-left: 0.75rem;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.8125rem;
}
.empty {
  color: var(--faint);
  font-size: 0.875rem;
}
.scroll {
  overflow-x: auto;
}
.card .table {
  margin-top: 0;
  font-size: 0.875rem;
}

@media (max-width: 720px) {
  .wrap {
    width: calc(100% - 2rem);
  }
  .hero {
    padding-top: 3.5rem;
  }
  .band {
    padding: 1.75rem 1.25rem;
  }
  .dl {
    flex-direction: column;
    align-items: stretch;
  }
  .release {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  .top nav a {
    padding-inline: 0.5rem;
  }
  .btn {
    width: 100%;
  }
  .cta .btn {
    width: auto;
    flex: 1 1 12rem;
  }
}
@media (max-width: 480px) {
  .brand span {
    display: none;
  }
}
@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
  }
}